CN111058457A - Composite stirring pile with prefabricated reinforced concrete pipe pile inserted inside and construction method - Google Patents
Composite stirring pile with prefabricated reinforced concrete pipe pile inserted inside and construction method Download PDFInfo
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- CN111058457A CN111058457A CN201911281111.3A CN201911281111A CN111058457A CN 111058457 A CN111058457 A CN 111058457A CN 201911281111 A CN201911281111 A CN 201911281111A CN 111058457 A CN111058457 A CN 111058457A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
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Abstract
The invention relates to the technical field of concrete pipe piles and discloses a composite mixing pile with a prefabricated reinforced concrete pipe pile inserted therein and a construction method, wherein each cubic meter of concrete comprises the following raw materials: 380kg of cement, 1000kg of yellow sand, 750kg of stones, 7-35kg of water reducing agent, 83-260kg of water and 20-150kg of fibers. The invention has simple construction process, can effectively shorten the whole construction period, saves the time for removing the section steel, inserts the cement mixing pile of the reinforced concrete pipe pile, removes the mechanical operation cost for removing the section steel, saves a large amount of manufacturing cost, saves the space of the site, and also avoids a plurality of mechanical interpenetration operations in the construction site.
Description
Technical Field
The invention relates to the technical field of concrete tubular piles, in particular to a composite mixing pile with a prefabricated reinforced concrete tubular pile inserted inside and a construction method.
Background
During underground engineering construction, a stiff cement-soil mixing pile with inserted section steel is usually adopted in foundation pit support, wherein the inserted section steel enhances the lateral rigidity of the cement mixing pile and reduces the lateral deformation of the cement mixing pile, the inserted section steel can be completely pulled out and recycled after the construction of an underground structure is finished, but the pulling-out of the section steel needs a larger mechanical operation space, and under some special conditions, after the underground structure is constructed out of the ground, the underground structure is limited by peripheral fields, the mechanical operation space for pulling out the section steel is not provided, and the section steel is difficult to recycle.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme:
a composite mixing pile with a prefabricated reinforced concrete pipe pile inserted inside comprises the following raw materials per cubic meter of concrete: 380kg of cement, 1000kg of yellow sand, 750kg of stones, 7-35kg of water reducing agent, 83-260kg of water, 20-150kg of fibers, 18-100kg of expanding agent, 10-30kg of slag powder, 20-50kg of fly ash and 5-15kg of bentonite.
Preferably, the method comprises the following raw materials: 150kg of cement, 450kg of yellow sand, 750kg of stones, 7kg of water reducing agent, 83kg of water, 20kg of fibers, 18kg of expanding agent, 10kg of slag powder, 20kg of fly ash and 5kg of bentonite.
Preferably, the method comprises the following raw materials: 160kg of cement, 470kg of yellow sand, 820kg of stones, 15kg of water reducing agent, 103kg of water, 40kg of fibers, 30kg of expanding agent, 20kg of slag powder, 25kg of fly ash and 8kg of bentonite.
Preferably, the method comprises the following raw materials: 300kg of cement, 720kg of yellow sand, 1150kg of stones, 30kg of water reducing agent, 240kg of water, 130kg of fibers, 65kg of expanding agent, 21kg of slag powder, 35kg of fly ash and 12kg of bentonite.
Preferably, the particle size of the stones is 4-27mm, and the fineness modulus of the yellow sand is 2.5-3.2 mm.
A composite mixing pile with a prefabricated reinforced concrete pipe pile inserted inside and a construction method thereof comprise the following steps:
s1, placing cement, yellow sand, pebbles, a water reducing agent, water, fibers, an expanding agent, slag powder, fly ash and bentonite into a stirrer, uniformly stirring, and pouring into a forming die to obtain the reinforced concrete pipe pile;
s2, accurately lofting an enclosure center line by using a measuring instrument, excavating a working groove along the parallel direction of the enclosure center line by using an excavator according to the lofted enclosure center line of the cement-soil mixing pile, and determining the width of the groove according to the width of an enclosure structure;
s3, placing two positioning section steels in the direction parallel to the groove, and moving the pile frame of the drilling machine to be in place according to the determined position;
s4, controlling the sinking speed and the lifting speed of the stirring drilling machine in construction, ensuring the stirring time, and enabling each pile to be drilled down at a constant speed and lifted at a constant speed;
s5, after the cement-soil mixing pile is constructed, a crane is immediately put in place to prepare for lifting the reinforced concrete pipe pile, the reinforced concrete pipe pile is inserted by adopting a hammering method or static pressure, and the insertion time of the reinforced concrete pipe pile is controlled within 3 hours after the mixing pile is constructed;
s6, when the reinforced concrete pipe pile is inserted to the designed elevation, fixing the pipe pile by using a phi 8 hanging bar, controlling the pipe pile to a certain elevation, and simultaneously treating the overflowing cement soil;
and S7, repeatedly circulating to form the composite stirring pile with the reinforced concrete pipe pile inserted inside.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention has simple construction process, can effectively shorten the whole construction period, saves the time for pulling out the section steel, inserts the cement mixing pile of the reinforced concrete pipe pile, removes the mechanical operation cost for pulling out the section steel, saves a large amount of manufacturing cost, saves the field space and also avoids various mechanical alternate operations in the construction field.
(2) The invention can adopt a hammering method or static pressure through the insertion of the reinforced concrete pipe pile, the reinforced concrete pipe pile is arranged at the center of the cement mixing pile, and the reinforced concrete pipe pile is inserted into the composite cement mixing pile of the cement mixing pile, thereby not only playing the role of supporting a foundation pit, but also having the water stopping effect and being economical and reasonable.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, the composite mixing pile with the prefabricated reinforced concrete pipe pile inserted inside comprises the following raw materials per cubic meter of concrete: 380kg of cement, 1000kg of yellow sand, 750kg of stones, 7-35kg of water reducing agent, 83-260kg of water, 20-150kg of fibers, 18-100kg of expanding agent, 10-30kg of slag powder, 20-50kg of fly ash and 5-15kg of bentonite, wherein the particle size of the stones is 4-27mm, and the fineness modulus of the yellow sand is 2.5-3.2 mm.
The first embodiment is as follows:
a composite mixing pile with a prefabricated reinforced concrete pipe pile inserted inside comprises the following raw materials per cubic meter of concrete: 150kg of cement, 450kg of yellow sand, 750kg of stones, 7kg of water reducing agent, 83kg of water, 20kg of fibers, 18kg of expanding agent, 10kg of slag powder, 20kg of fly ash and 5kg of bentonite.
The method comprises the following steps:
s1, placing cement, yellow sand, pebbles, a water reducing agent, water, fibers, an expanding agent, slag powder, fly ash and bentonite into a stirrer, uniformly stirring, and pouring into a forming die to obtain the reinforced concrete pipe pile;
s2, accurately lofting an enclosure center line by using a measuring instrument, excavating a working groove along the parallel direction of the enclosure center line by using an excavator according to the lofted enclosure center line of the cement-soil mixing pile, and determining the width of the groove according to the width of an enclosure structure;
s3, placing two positioning section steels in the direction parallel to the groove, and moving the pile frame of the drilling machine to be in place according to the determined position;
s4, controlling the sinking speed and the lifting speed of the stirring drilling machine in construction, ensuring the stirring time, and enabling each pile to be drilled down at a constant speed and lifted at a constant speed;
s5, after the cement-soil mixing pile is constructed, a crane is immediately put in place to prepare for lifting the reinforced concrete pipe pile, the reinforced concrete pipe pile is inserted by adopting a hammering method or static pressure, and the insertion time of the reinforced concrete pipe pile is controlled within 3 hours after the mixing pile is constructed;
s6, when the reinforced concrete pipe pile is inserted to the designed elevation, fixing the pipe pile by using a phi 8 hanging bar, controlling the pipe pile to a certain elevation, and simultaneously treating the overflowing cement soil;
and S7, repeatedly circulating to form the composite stirring pile with the reinforced concrete pipe pile inserted inside.
Example two:
a composite mixing pile with a prefabricated reinforced concrete pipe pile inserted inside comprises the following raw materials per cubic meter of concrete: 160kg of cement, 470kg of yellow sand, 820kg of stones, 15kg of water reducing agent, 103kg of water, 40kg of fibers, 30kg of expanding agent, 20kg of slag powder, 25kg of fly ash and 8kg of bentonite.
The method comprises the following steps:
s1, placing cement, yellow sand, pebbles, a water reducing agent, water, fibers, an expanding agent, slag powder, fly ash and bentonite into a stirrer, uniformly stirring, and pouring into a forming die to obtain the reinforced concrete pipe pile;
s2, accurately lofting an enclosure center line by using a measuring instrument, excavating a working groove along the parallel direction of the enclosure center line by using an excavator according to the lofted enclosure center line of the cement-soil mixing pile, and determining the width of the groove according to the width of an enclosure structure;
s3, placing two positioning section steels in the direction parallel to the groove, and moving the pile frame of the drilling machine to be in place according to the determined position;
s4, controlling the sinking speed and the lifting speed of the stirring drilling machine in construction, ensuring the stirring time, and enabling each pile to be drilled down at a constant speed and lifted at a constant speed;
s5, after the cement-soil mixing pile is constructed, a crane is immediately put in place to prepare for lifting the reinforced concrete pipe pile, the reinforced concrete pipe pile is inserted by adopting a hammering method or static pressure, and the insertion time of the reinforced concrete pipe pile is controlled within 3 hours after the mixing pile is constructed;
s6, when the reinforced concrete pipe pile is inserted to the designed elevation, fixing the pipe pile by using a phi 8 hanging bar, controlling the pipe pile to a certain elevation, and simultaneously treating the overflowing cement soil;
and S7, repeatedly circulating to form the composite stirring pile with the reinforced concrete pipe pile inserted inside.
Example three:
a composite mixing pile with a prefabricated reinforced concrete pipe pile inserted inside comprises the following raw materials per cubic meter of concrete: 300kg of cement, 720kg of yellow sand, 1150kg of stones, 30kg of water reducing agent, 240kg of water, 130kg of fibers, 65kg of expanding agent, 21kg of slag powder, 35kg of fly ash and 12kg of bentonite.
The method comprises the following steps:
s1, placing cement, yellow sand, pebbles, a water reducing agent, water, fibers, an expanding agent, slag powder, fly ash and bentonite into a stirrer, uniformly stirring, and pouring into a forming die to obtain the reinforced concrete pipe pile;
s2, accurately lofting an enclosure center line by using a measuring instrument, excavating a working groove along the parallel direction of the enclosure center line by using an excavator according to the lofted enclosure center line of the cement-soil mixing pile, and determining the width of the groove according to the width of an enclosure structure;
s3, placing two positioning section steels in the direction parallel to the groove, and moving the pile frame of the drilling machine to be in place according to the determined position;
s4, controlling the sinking speed and the lifting speed of the stirring drilling machine in construction, ensuring the stirring time, and enabling each pile to be drilled down at a constant speed and lifted at a constant speed;
s5, after the cement-soil mixing pile is constructed, a crane is immediately put in place to prepare for lifting the reinforced concrete pipe pile, the reinforced concrete pipe pile is inserted by adopting a hammering method or static pressure, and the insertion time of the reinforced concrete pipe pile is controlled within 3 hours after the mixing pile is constructed;
s6, when the reinforced concrete pipe pile is inserted to the designed elevation, fixing the pipe pile by using a phi 8 hanging bar, controlling the pipe pile to a certain elevation, and simultaneously treating the overflowing cement soil;
and S7, repeatedly circulating to form the composite stirring pile with the reinforced concrete pipe pile inserted inside.
In the invention, during the construction of the stiff cement mixing pile, the reinforced concrete pipe pile is inserted into the cement mixing pile (after the cement mixing pile is formed, a pile driver is used for inserting the reinforced concrete pipe pile, and the hammering method or static pressure can be adopted for inserting the reinforced concrete pipe pile), the reinforced concrete pipe pile is arranged at the center of the cement mixing pile, and the reinforced concrete pipe pile is inserted into the composite cement mixing pile of the cement mixing pile, so that the foundation pit supporting effect is achieved, the water stopping effect is achieved, the method is economical and reasonable, the construction process is simple, the whole construction period can be effectively shortened, the time for removing the section steel is saved, the cement mixing pile with the prefabricated reinforced concrete pipe pile inserted in is free of the mechanical operation cost for removing the section steel, the engineering cost is saved, and the construction cost can be saved by more than 20% through partial engineering analysis, the structure saves the space of the site and also avoids the alternate operation of various machines in the construction site.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (6)
1. The composite mixing pile with the prefabricated reinforced concrete pipe pile inserted inside is characterized in that concrete per cubic meter comprises the following raw materials: 380kg of cement, 1000kg of yellow sand, 750kg of stones, 7-35kg of water reducing agent, 83-260kg of water, 20-150kg of fibers, 18-100kg of expanding agent, 10-30kg of slag powder, 20-50kg of fly ash and 5-15kg of bentonite.
2. The composite stirring pile with the inserted precast reinforced concrete pipe pile as claimed in claim 1, which is characterized by comprising the following raw materials: 150kg of cement, 450kg of yellow sand, 750kg of stones, 7kg of water reducing agent, 83kg of water, 20kg of fibers, 18kg of expanding agent, 10kg of slag powder, 20kg of fly ash and 5kg of bentonite.
3. The composite stirring pile with the inserted precast reinforced concrete pipe pile as claimed in claim 1, which is characterized by comprising the following raw materials: 160kg of cement, 470kg of yellow sand, 820kg of stones, 15kg of water reducing agent, 103kg of water, 40kg of fibers, 30kg of expanding agent, 20kg of slag powder, 25kg of fly ash and 8kg of bentonite.
4. The composite stirring pile with the inserted precast reinforced concrete pipe pile as claimed in claim 1, which is characterized by comprising the following raw materials: 300kg of cement, 720kg of yellow sand, 1150kg of stones, 30kg of water reducing agent, 240kg of water, 130kg of fibers, 65kg of expanding agent, 21kg of slag powder, 35kg of fly ash and 12kg of bentonite.
5. The composite stirring pile with the inserted precast reinforced concrete tubular pile as claimed in claim 1, wherein the particle size of the stones is 4-27mm, and the fineness modulus of the yellow sand is 2.5-3.2 mm.
6. A composite mixing pile with a prefabricated reinforced concrete pipe pile inserted inside and a construction method are characterized by comprising the following steps:
s1, placing cement, yellow sand, pebbles, a water reducing agent, water, fibers, an expanding agent, slag powder, fly ash and bentonite into a stirrer, uniformly stirring, and pouring into a forming die to obtain the reinforced concrete pipe pile;
s2, accurately lofting an enclosure center line by using a measuring instrument, excavating a working groove along the parallel direction of the enclosure center line by using an excavator according to the lofted enclosure center line of the cement-soil mixing pile, and determining the width of the groove according to the width of an enclosure structure;
s3, placing two positioning section steels in the direction parallel to the groove, and moving the pile frame of the drilling machine to be in place according to the determined position;
s4, controlling the sinking speed and the lifting speed of the stirring drilling machine in construction, ensuring the stirring time, and enabling each pile to be drilled down at a constant speed and lifted at a constant speed;
s5, after the cement-soil mixing pile is constructed, a crane is immediately put in place to prepare for lifting the reinforced concrete pipe pile, the reinforced concrete pipe pile is inserted by adopting a hammering method or static pressure, and the insertion time of the reinforced concrete pipe pile is controlled within 3 hours after the mixing pile is constructed;
s6, when the reinforced concrete pipe pile is inserted to the designed elevation, fixing the pipe pile by using a phi 8 hanging bar, controlling the pipe pile to a certain elevation, and simultaneously treating the overflowing cement soil;
and S7, repeatedly circulating to form the composite stirring pile with the reinforced concrete pipe pile inserted inside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911281111.3A CN111058457A (en) | 2019-12-13 | 2019-12-13 | Composite stirring pile with prefabricated reinforced concrete pipe pile inserted inside and construction method |
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| CN201911281111.3A CN111058457A (en) | 2019-12-13 | 2019-12-13 | Composite stirring pile with prefabricated reinforced concrete pipe pile inserted inside and construction method |
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| CN111058457A true CN111058457A (en) | 2020-04-24 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563601A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Concrete pipe pile mixed by steel fiber and fabricating method |
| CN101798810A (en) * | 2009-02-20 | 2010-08-11 | 上海强劲基础工程有限公司 | Cement-soil composite pile inserted into reinforced concrete core materials |
| CN106630820A (en) * | 2016-11-15 | 2017-05-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Mixed fiber reinforced miniature circular steel tube concrete pile for soil slope |
| CN107044120A (en) * | 2017-04-20 | 2017-08-15 | 武汉谦诚桩工科技股份有限公司 | A kind of major diameter ultra deep stirs spray stiff composite pile and its construction method |
| CN109736303A (en) * | 2019-01-14 | 2019-05-10 | 中国兵器工业北方勘察设计研究院有限公司 | It is a kind of to press pour water soil static pressure pipe pile structure and construction method |
| CN110387877A (en) * | 2019-07-29 | 2019-10-29 | 中铁十二局集团建筑安装工程有限公司 | A kind of stiff composite pile construction technology |
-
2019
- 2019-12-13 CN CN201911281111.3A patent/CN111058457A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563601A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Concrete pipe pile mixed by steel fiber and fabricating method |
| CN101798810A (en) * | 2009-02-20 | 2010-08-11 | 上海强劲基础工程有限公司 | Cement-soil composite pile inserted into reinforced concrete core materials |
| CN106630820A (en) * | 2016-11-15 | 2017-05-10 | 中国电建集团贵阳勘测设计研究院有限公司 | Mixed fiber reinforced miniature circular steel tube concrete pile for soil slope |
| CN107044120A (en) * | 2017-04-20 | 2017-08-15 | 武汉谦诚桩工科技股份有限公司 | A kind of major diameter ultra deep stirs spray stiff composite pile and its construction method |
| CN109736303A (en) * | 2019-01-14 | 2019-05-10 | 中国兵器工业北方勘察设计研究院有限公司 | It is a kind of to press pour water soil static pressure pipe pile structure and construction method |
| CN110387877A (en) * | 2019-07-29 | 2019-10-29 | 中铁十二局集团建筑安装工程有限公司 | A kind of stiff composite pile construction technology |
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Application publication date: 20200424 |